a funeral was held this morning for krystle campbell. family and friends packed a church in medford, massachusetts, where she grew up. more than 800 people gathered on the campus of boston university tonight for a memorial service for another victim. 23-year-old lingzi lu. she was a graduate student from china, studying statistics. the university has created a scholarship fund in her memory. and the bay area boy injured in the bombing has very special visitors today at boston's children's hospital. a's players redick, moss, and batting coach, ty waller visited him in his hospital room. he suffer add serious leg injury when he was hit by shrapnel. his family remains with him in boston, but they hope to return home at the end of the month. >>> surveillance video provided the crucial clues needed to track down the boston suspects. now san francisco's police chief wants to put more cameras on city streets here, and more eyes on public events. one city official is pushing back. >> reporter: an estimated 1 million people came to the san franci